Email DNS readiness checker
Check SPF, DMARC, MX, and one DKIM selector before moving a FreeResend or Amazon SES domain into production.
Never paste AWS keys, SMTP passwords, database URLs, or private tokens into this checker.
FreeResend
Check your sending domain
Run the checker to see the records that most often block SES launches, then use the launch kit or review offer for the remaining rollout work.
SPF
DMARC
DKIM
MX
Need a production pass?
The checker only sees public DNS. The $12 Deployment Review covers SES sandbox status, region choice, DKIM alignment, webhook gaps, and the next launch fixes from your deployment URL.